Combing machine



May 8, 1923. 1 1,454,484 7 J. W. NASMITH GOMBING MACHINE Filed Jan. 16. 1922 QZZQ I J OHN' W. NASMITH, OF MANCHESTER, ENGLAND.

COIVIBING MTACHIINE- Application filed January 16, 1922." Scria1 No. 529,528.

To all whom it may concern:

Be it knownth'at I, JOHN WILLiAM NA- SMITH, asubject of the King of Great Britain, residing at Leegate, Heaton-Mersey, Manchester, in the county of Lancaster, England, have invented certain new and useful Improvements in Combing Machlnes, of which the following is a specification, reference being had to the accompanying drawings;

In my United States Patent No. 7 24,119, granted-to me there is described on page 3, lines 104 to 109 et seq.-, the manner in which the top leather covered detaching roller is caused to roll to and fro on the top of the bottom steel detaching'roller and as hitherto arranged there has been a steady weight or pressure on the leather roller constantly throughout the stroke. But during the greater part of the stroke no detaching is taking place and a small pressure, sufficient to ensure rotation of the top roller with the bottom one, would be enough until the rollers have seized the fibres composing the nipper tuft and commence to draw them through theneedlesof the top comb. They offer considerable resistance which gradually increases until the top roller has reached the forward end of its stroke and the top comb is close to the steel detaching roller.

During this, the detaching period, a strong pressure. isrequired on the roller to overcome this resistance.

The object of the present invention is therefore to provide means whereby the pressure on the top roller shall vary automatically during each stroke so as to be reduced almost to nil whenthe roller has rolled back the life of the leather covering of the toproller. A further bbject is to combine with the arrangement meansof easily removing the pressure from the top roller so that it can be freely and easily removed when necessary.

Figs. 1 and 2 are partial sections through the middle of one head of aNasmith comb I machine.

ing machine. Fig.1 shows the top leather covered detaching roller in its most forward position, just as the detachingprocess 'is ended and Fig. 2' shows'it at the opposite;

extreme of its rolling movement when 'no detaching is taking place." Only one weight? hook and relieving lever are shown, butit.

will be understood that there is an identi- I cal pair at each end of the rollerin each head of the machine. Fi s. 3 and 4c showah w ternative modifications of detail.

Referring to the drawings, F represents part of the framing of the machinepinfwhich i are journalled the cylindershaft G and the rocking shaft R and which carries the fixed: j pin P. It alsocarries bearin s for the roll:

ers D, Dand the shafts.

The two-armed 1 operating lever L is keyed'onthe shaft- S and rocked to and fro fromthe shaft B. through the adjusting link N, the shaft R being controlled in the usual manner. by

cam or eccentric 'in the head-stock 'of'the carries 'arpinl upon-which is loosely piv oted the hook-shaped member H, whose The upper armflof the lever L 7 other end bears on the bush on the end of V, i

the top roller'cL. -Attached to the lower part of the hook H is a tail T having a spring 2 I connected to its lower end. The other end of thespring-Q is attached to a projection 3 formed on the long lever K which carries apin 4: engaging in .a notch formed in the H swinging'lever 5 pivoted freely on thepin P. The upper end of the 1ong ..1ever K is conveniently, but not necessarily, pivoted from the upper notch of lever 5, as herein-. after-described. In order to remove easily loosely onthe pin 1 alongside the hookI-IJ The said'leverf K constitutes a swinging weight lever when the pin-4 is disengaged the roller d when required,a handle 6 is I provided on'the'lever K so:that it can be raised against the pull ofthe spring 2 until i the pine is clear of the top notch of the lever-5, which is then .pushedback and pin 4; allowed to fall into the lower notch of. the

tact 'takes place the springi2 is dead "and" the hook H and the'leverj K become 'as one piece so that the weight of the lever K holds up the. hook H free of the neck of the roller 03 whilst the pin 4c rests in the lower notch in the lever When the pin 4 is disengagedas explained,

ill

the weight of the lever K, and the weight of the hook-shaped member H causes both the members K and H to swing, to raise the tip of the member H from the neck of the roller d as just described.

During each stroke of the machine the lever L moves uninteruptedly from the position shown in Fig. l to that shown in Fig. 2 and back again and carries with it the long lever K swinging on the lever 5 and pin P. In doing so the projection 3 moves nearer to the tail T and the tension of the springis relaxed as the roller (5 rolls over -J" ment takes place the distance between 3 and T is gradually increased, gradually augmenting the tension of the spring as required to put the maximum pressure on the roller dat the forward end of its rolling movement.

By pivoting the lever K on the pin 1 a suitable displacement of the projection 3 is obtained but this displacement may be reduced by pivoting the lever K on an independent pin, 9 Fig. 3 fixed in the lever L but nearer the center of the shaft S and more in front of it so'that the movement of the pin 9 is rather vertical than horizontal.

Or the movement-of 3 maybe eliminated al-- together by pivoting the lever K on the shaft S itself as in Fig. 4:, when the relaxation of the pull of the spring will depend solely on the displacement of the lower end of the tail T. But it is. preferable to have both the points to which the ends of the spring2 are attached moving alternately towards and away from each other so that a lighter and more flexible spring may be employed than would be the case if only the point on the hook El were moving and the other end of the spring attached to some fixed point.

I claim: Y

1. In a combing-machine of the class wherein a top-detaching roller is moved to and fro on a lower roller relatively to the combing cylinder, the combination with said top-detaching roller of a spring and lever connections between the said top roller and spring to alternately relax and extend the spring as the said top roller moves toward and from the combing cylinder.

2. A combing-machine. wherein a top-detaching roller is mounted to be moved to and fro on a lower roller relatively to the comb- .ing cylinder, said machine having a spring and lever connections between the said top roller and spring, characterized by the fact that the lever connections are constructed and arranged to cause the spring to be alternately relaxed and extended as the said top roller moves toward and from the combing cylinder.

3. In a combing-machine of the class wherein a top-detaching roller is moved to and fro on a lowerroller relatively to the combing cylinder, the combination with said top roller of an operating lever, a weighted hook-shaped member connecting said operating lever and top roller, and a tension spring connected to said hook-shaped member, at a point of the latter which moves in the opposite direction to'the top roller.

4.111 a combing-machine of the class wherein a top-detaching roller is moved to and fro on a lower roller relatively to the combing cylinder, the combination with said top roller of an operating lever, a hookshaped member connecting said operating lever and top roller, a swinging weight lever pivoted to the operating lever, and atension spring connecting said weight lever and hook-shaped member.

5. In a combing-machine of the class wherein a top-detaching roller is moved to and fro on a lower roller relatively to the combing cylinder, the combination with said top roller, of an operating lever, a hookshaped member connecting said operating oted to the operating lever, and a tension spring connecting the said swinging lever v and hook-shaped member, the said spring being attached to the swinging lever and hook-shaped member at points thereof which move in opposite directions to each other, as the top roller moves toand fro on the bottom roller.

6. In a combing-machine of the class wherein a top-detaching roller is moved to and fro on a lower roller relatively to the combing cylinder, the combination with said top roller of an operating lever, a hookshaped member connecting said operating lever and top roller, a swinging weight lever pivoted to the operating lever, and a tension spring connecting said weight lever and hoolrshaped member, said weight lever having a projection to contact with the hookshaped member, when pressure of the latter on the said top roller is to be relieved.

In testimony whereof I have afiixed my signature. 

